Security readout for executives and security teams
Plain-English summary
CVE-2023-20613 is a MediaTek radio interface layer flaw that can let a local, highly privileged attacker gain broader system-level control. It affects many MediaTek chipsets on Android 11, 12, and 13. No user interaction is required, but the attacker already needs high local privileges.
Executive priority
Treat this as a moderate mobile fleet hygiene issue, not an internet-wide emergency. Prioritize patch confirmation for managed Android devices with affected MediaTek chipsets, because successful exploitation can deepen compromise after an attacker already has high local privileges.
Technical view
The issue is an out-of-bounds write in ril caused by a missing bounds check, mapped to CWE-20. CVSS 3.1 is 6.7 with local access, low complexity, high privileges required, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely on Android devices using the listed MediaTek chipsets and Android 11.0, 12.0, or 13.0, especially where OEM firmware has not incorporated MediaTek patch ALPS07628614.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation. Exploitation is local and requires high privileges, reducing broad opportunistic risk, but successful exploitation could materially increase attacker control on an already-compromised device.
Researcher notes
The public description is concise and does not provide technical root-cause detail beyond ril, missing bounds check, and out-of-bounds write. Avoid assuming affected OEM models from chipset names alone; confirm through firmware advisories and patch provenance.
Mitigation direction
- Confirm OEM firmware includes MediaTek patch ALPS07628614 or later February 2023 bulletin content.
- Prioritize updates for affected MediaTek Android 11, 12, and 13 device fleets.
- Check MediaTek and device OEM advisories for model-specific firmware availability.
- Retire or isolate devices that cannot receive applicable OEM security updates.
Validation and detection
- Inventory Android devices by MediaTek chipset model and Android major version.
- Compare firmware build and security patch information against OEM release notes.
- Verify whether patch ID ALPS07628614 is included in deployed firmware.
- Track unsupported or unpatched devices as residual local privilege escalation risk.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-20: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2023-20613 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H0.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.7MediumVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://corp.mediatek.com/product-security-bulletin/February-2023CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.